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The solar photovoltaic circuit breaker with reclosing function could be automatically opened in the case of over-volt-
age and under-voltage, and it could be automatically closed when the normal voltage is restored. At present, there are
several main scenarios: one is a distributed grid-connected system, and another is a system with large grid-connected
scale.
1. Solar photovoltaic circuit breaker
Under manual gear, the product has only overload and short-circuit protection.
Under automatic gear, the product has over and under voltage protection besides overload and short-circuit
protection, and it also has reclosing function when some conditions are satisfied.
2. Feature
Modular structure with 35mm standard rail installation.
With manual/automatic switch.
The action of switch on/off is fast and reliable.
Introduction to automatic gear function:
Over-voltage and under-voltage protection at the power supply terminal
a
The circuit breaker will be switched off when the power supply terminal is over or under voltage. The circuit brekaer will be
switched on when the normal voltage is restored under non-locking state.
Noted: locking ---means that the device will no longer activate the automatic closing function.The device will be switched off for
once if the voltage is abnormal. When the voltage returns to normal, the device will be switched on after 20s, switched off within the
subsequent 5s, switched on within the subsequent 50s, switched off within the subsequent 5s, then it would be locked.
Working status indication of power supply and the device
b
Four status indications:
1 If the indicator single flashes (once in 3s), which indicates that the circuit has the problem of over-voltage.
2 If the indicator double flashes (twice in 3s), which indicates that the circuit has the problem of under-voltage.
3 If the indicator is constantly on, which indicates that the circuit and equipment work properly.
4 If the indicator is off, which indicates that the circuit is in power failure.
locking and manual unlocking when under-voltage & over-voltage is frequently exceeded
c
When the voltage of load is normal, closing by manual (automatic gear), can be removed;
The electricity powered off for half an hour, the voltage of load is normal when the power is on, can be removed; If the voltage of
load is abnormal, even manual intervention, the product will be locked after closing .
3.Installation and testing
Please confirm that the device is in "automatic" and "tripping" status before installation.
Energize the device after installation. Close the circuit breaker, and manually close and trip the circuit breaker again to
check whether the circuit breaker works normally.
Adjust the input power of the device to over-voltage or under-voltage status to check whether the product is normal or
not if possible.
